CDC: Up to 34 Million Americans With Pandemic Flu
Using a model to account for the underascertainment of cases, the CDC now estimates that 14-34 million Americans were infected with the pandemic influenza virus between April and October 17, 2009. The Center previously estimated the number of US cases between April and July 23rd of this year at 1.8-5.7 million.
A breakdown by age (years) shows that pandemic flu has preferentially affected younger adults and children. (The graph provides midlevel estimates of cases [horizontal bars] and estimated ranges [vertical bars].)
By using the CDC’s midlevel estimates, the mortality rate of pandemic flu is 0.018%—which is consistent with the range of mortality rates provided by Harvard epidemiologist Marc Lipstich (0.007%-0.045%).
One of the latest apparent victims of pandemic flu is University of Ottawa chemistry professor Keith Fagnou, 38, an otherwise healthy father of 3 children. Fagnou died of suspected H1N1 disease on November 11, 3 days after being hospitalized.
HT: In the Pipeline.